Support our Sponsors, they keep FADU free:   AG Photographic   Keyphoto   The Imaging Warehouse   Process Supplies   RH Designs   RK Photo   Second-hand Darkroom Supplies   Silverprint Ltd

Notices

Go Back   Film and Darkroom User > Member Organised Functions > Sale or Wanted

  ***   Click here for the FADU 2015/2014 Yearbooks   ***

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 31st July 2019, 10:11 AM
John King John King is offline
Friend
 
Join Date: Nov 2012
Location: County Durham
Posts: 2,656
Default Anti Newton Ring Glass

I don't suppose anyone has a single piece of AN glass out of a 6x4.5 slide mount by any chance.

I am trying to change my glass-less 35mm negative carrier in my LPL7700, into one that has a single glass above the negative, similar to that in the Leica V35 enlarger. Without the glass to stop the negative buckling in long exposures I am wasting a lot of paper.

I have a load of 35mm AN pieces of glass, but they are just too small to be able to attach them easily with adequate support along the edges. I have tried commercially available AN glass but it is too thick to fit and maintain the upper part of the carrier parallel with the lower.
Reply With Quote
  #2  
Old 31st July 2019, 10:58 AM
vanannan's Avatar
vanannan vanannan is offline
Friend
 
Join Date: Aug 2009
Location: I live in Port Erin on the Isle Of Man
Posts: 740
Default

Quote:
Originally Posted by John King View Post
I don't suppose anyone has a single piece of AN glass out of a 6x4.5 slide mount by any chance.

I am trying to change my glass-less 35mm negative carrier in my LPL7700, into one that has a single glass above the negative, similar to that in the Leica V35 enlarger. Without the glass to stop the negative buckling in long exposures I am wasting a lot of paper.

I have a load of 35mm AN pieces of glass, but they are just too small to be able to attach them easily with adequate support along the edges. I have tried commercially available AN glass but it is too thick to fit and maintain the upper part of the carrier parallel with the lower.
Hi
I have a number of 6x7 Gepe glass slide mounts one side is anti Newton, would you be able to cut it or have it cut?
Reply With Quote
  #3  
Old 1st August 2019, 06:18 AM
John King John King is offline
Friend
 
Join Date: Nov 2012
Location: County Durham
Posts: 2,656
Default

That is perfect. I should be able to cut them (once I have found my glass cutter) I only need one, but two would be better cos then I can also convert the 6x6 glassless carrier as well. How much do you want for them and of course I would pay the postage.

I will send you a PM with my address and 'phone number.
Reply With Quote
  #4  
Old 1st August 2019, 06:24 AM
vanannan's Avatar
vanannan vanannan is offline
Friend
 
Join Date: Aug 2009
Location: I live in Port Erin on the Isle Of Man
Posts: 740
Default

Hi John
No charge, £2 postage, I will send my PayPal email by PM.

Regards
Tony
Reply With Quote
  #5  
Old 1st August 2019, 07:33 AM
mpirie mpirie is offline
Friend
 
Join Date: Jul 2009
Location: Highlands of Scotland
Posts: 386
Default

John,

I'm not familiar with the LPL7700, but is it possible that there's a heat filter missing from the light path?

Mike
Reply With Quote
  #6  
Old 1st August 2019, 08:45 AM
PaulBJE PaulBJE is offline
Friend
 
Join Date: Oct 2010
Location: Kingsclere - North Hampshire
Posts: 169
Default

I have an LPL7700 and have never had any problems with a buckling neg even for 6x7. I never expose the neg for longer than about 40 seconds so this might not apply if the exposure is much longer.
Paul
p.s. I do have a universal neg holder with glass inserts but prefer to use the individual holders.
Reply With Quote
  #7  
Old 1st August 2019, 10:13 AM
Keith Haithwa Keith Haithwa is offline
Friend
 
Join Date: Feb 2017
Location: Yorkshire
Posts: 56
Default

I use an LPL7700 and I have to ask if you are using the correct dichroic reflector lamp: https://www.flameport.com/electric/l...light_lamp.cs4

The LPL7700 has a large heat sink above the lamp housing specifically to dissipate the rearward projected heat from the dichroic lamp and it does get hot! If a simple aluminium reflector projector lamp is used it will overheat the negative stage as it projects the heat forwards.

It's a while since I had my enlarger head apart to lube the filter mechanism and I remember there is a thick asbestos - yes, asbestos - spacer between the lamp housing and the filter chamber which I assume is there to minimise heat conduction between the two assemblies.

I have never encountered overheating at the negative stage and a check this morning showed a 2 degree temperature rise above ambient for a 3 minute exposure time - and I have never used such a time in real life.
Reply With Quote
  #8  
Old 14th October 2021, 03:09 PM
Nat Polton Nat Polton is offline
Friend
 
Join Date: Oct 2019
Posts: 498
Default

I was pondering about the very same idea last night.
I thought I was the first to think think up this slide mount glass dodge.
It's all been done before.

I was wondering if the anti newton slide glass was a success.


I know this was a while back, but it would be nice to know the outcome.

Cheers.
__________________
It will all be over by Christmas.
Reply With Quote
Reply
Support our Sponsors, they keep FADU free:   AG Photographic   Keyphoto   The Imaging Warehouse   Process Supplies   RH Designs   RK Photo   Second-hand Darkroom Supplies   Silverprint Ltd

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Anti-newton glass substitute GoodOldNorm Darkroom 6 23rd June 2019 09:10 PM
Anti Newton Glass in the Negative Carrier Hughes Monochrome printing techniques 14 22nd January 2012 09:31 PM
New Anti-Spam / Anti-Hacker software Installed. Bob Feedback and forum matters 6 6th October 2010 09:55 PM
Newton Ellis Carl V Photography in general 12 11th August 2010 10:28 PM
anti-Newton ring glass Niall Bell Equipment miscellaneous 7 7th May 2010 06:52 AM


All times are GMT. The time now is 06:13 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.